/Engine/Source/Runtime/RHI/Public/RHICommandList.h
struct FRHICommandDrawIndexedIndirect : public [FRHICommand< FRHICommandDrawIndexedIndirect, FRHICommandDrawIndexedIndirectString__LINE__ >](API\Runtime\RHI\FRHICommand)
FRHIBuffer*...
ArgumentsBufferRHI
uint32
DrawArgumentsIndex
FRHIBuffer*...
IndexBufferRHI
uint32
NumInstances